Flyleaf for loose-leaf binders



July 5, 1927.

- H. c. STERLING FLYLEAF FOR LOOSE LEAF BINDEKS.

Filed Au. 9. 1926 2 Shuts-Sheet. 1

attenuate 1,634,345 July 1927' H. c. STERLING FLYLEAF FOR LOOSE uqu amvmns l Filed 11112. 1926 2 Sheets-Sheet. 2

gwvemtcm akkozucqy Patented July 5, 1927.

UNITED STATES PA T ENT O FFICE.

HARRYIC. STERLING, OF SYRACUSE, NEXV YORK, ASSIGNOR 'lO MGMILLAN BOOK COM- PANY, OFSYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

FLYLEAF FOR LOOSE-LEAF BINDER-S.

Application filed: August 9, 1926. Serial No.. 128,200.

This invention consists in an improvedfly leaf for that type of loose-leaf binders in which the leaves are threaded upon links or cross pieces, bridging the back member of the binder, the links being carried at their ends upon longitudinally movable pintles mounted in housings secured to the binder at or close to the hinge lines at the-junctions of the back and cover-boards.

The novelty of the. fly .leaf resides in. its being provided at its inner or attaching edge with a binding, preferably of metal, and formed with a longitudinal. groove'or depression to receive and position the proximate edge of the housing of the pintle slide, said binding also serving to, protect the fly leaf against wear occasioned by the housing and leaf-carrying links. Though metal is preferred for the binding, I do not mean to restrict myself thereto, as celluloid, fabrics saturated. with bakelite and subjected to pressure in suitable molds,.and1 other tough and reasonably stiff materials capable of retaining the shape given .them, may be employed. 4

The invention is illustrated in-itspreferred form in the accompanyingdrawings, in

which:

Figure 1 is a perspective view-of. a looscleaf binder provided with the improved fly leaf;

Fig. 2- a fragmentary sectional view showing the form of the pintle housings and slides and leaf-carrying links of the binder;

Fig; 3 perspective view of the fly leaf removed from the book; and

Fig. 4 a transverse sectional view' of the same on the line a-a of Fig, 2.

The use of lose-leaf binders for large and heavy books such asledgers, minute and record books, has 110W become quite general in banks, corporation offices. recording oflices, and the like, owing to their permitting removal of leaves for typewriting, to the superior design and workmanship now given them, and to the simple and efficient means provided for locking them to prevent unauthorized insertion or removal of a leaf or leaves and falsification of records. It has been found, however, that by reason of the very considerable size and weight of such books; the frequent and often careless handling of them, particularly where frequently consulted by the public; and the fact that many of them are daily opened for the tementer them, so alined, into their respective These openings in tne pintle housings.

faults are obviated by the improved fly leaf,

which will now be described. in detail, brief description. of the binder proper being given bv vwa 1 of preface.

In the drawings the numeral 1 designates the cover, comprising a back 2, ,preferably'of curved form, and the usual cover-boards 3 and ljoined to the parallel longitudinal:

edges of the back to permit a hingingaction, as well understood. To the inner face of each cover-board there is secured .in any convenient way a housing 5, formed by folding a metal blank through its midwidth: or

thereabout, fr m end to end, and laying the;

two halves parallel with each other and. at

a distance apart sufficient to afford space-- for a pintle slide 6, and to receive the inner edges of the cover-boards. edge is given a rounded form in cross section, and is provided at intervals with The folded is effected bet-ween the links and pintles when the pintle slides are moved longitudinally in link-engaging direction. Conversely, the links may be released at either end by reversing the movement of that slide the pintles of which engage such end. This construction is merely illustrative of the type of loose-leaf binder employed and may vary in detail, as for instance, through use of simple pintle rods or wires instead of the flat pintle-bearing slides shown.

W hen it is desired to remove a leaf from, or to insert a leaf into the binder, the pintle slide at one side of the back is moved to release at one end the links held thereby, and the back spreads sufficiently to withdraw the-released ends of the links from the openings 7, whereupon one or more leaves may be added, or any desired number may be removed. If the insertion or removal is leaf itself will be made of material such as to be made at a point inward from the cover-boards the leaves will be removed down to that point, the change will be made, the removed leaves replaced, the links reengaged by the pintles, and, if desired, locked or secured by special means new commonly provided for the purpose.

When the links are released at either end the heavy body of leaves tends to move or shift, and in doing so, to throw the links 8 more or less out of alinement, and considerable difiiculty is often experienced in realining the links, introducing their free ends into the openings 7, and alining them with the pintles 9. To meet this difficulty I provide a fly leaf 10 having at its inner or at taching edge a binding 11, preferably of sheet metal, folded longitudinally through it midwidth to receive between the two portions one edge of the leaf 10; or preferably, a stub 12 of a suitable woven fabric such as camb'ric, or other strong and tough ma terial, capable of repeated flexing without breakage. If the stub be not used, the fly just mentioned, and the binding will be applied directly thereto. It is preferred, however to employ the stub 12, and to glue, paste, or otherwise attach the leaf 10 thereto, as such construction gives the strength where needed, and permits the employment of any desired kind, quality, color or design of paper for the body of said leaf.

For the double purpose of securely holding the stub 12 or leaf 10 and the binding 11 in fixed and permanent engagement, and producing a guiding seat for the housing 5 in bringing together the links and the housing, the binding 11 with the stub or leaf inserted therein is pressed in a suitable die or former, or is passed between rolls, to produce a longitudinal groove or corrugation 13, conforming somewhat closely in curvature to the circular folded edge of the housing, the corrugation so made being thus given to the stub or to the leaf inserted in the binding, as well as to said binding itself. If desired a suitable cement may be applied to the stub or leaf before introducing it into the binding, and/or rivets, in-

turned prongs, or analogous fastenings may be employed in addition to corrugating the binding and the inserted stub or leaf.

The binding 11 of the fly leaf is provided with openings 14 to receive the links 8 of the binder, and corresponding with the openings formed in the leaves of the book for the like purpose.

The groove or corrugation 13 not only facilitates the alinement of the link ends and guides them to their receiving openings in the housing, but it forn'is a smooth and permanent seat for the housing, thus relieving the fly leaf of the serious wear incident to the rubbing and shifting of the housing in contact with it.

It is of course familiar practice to introduce between the boards and leaves of looseleaf books of the divided ring or hook type, wear strips of fiber board, celluloid, or the like, but these are unsuited for and inconvenient in the link-and-pintle type of binders, and lack entirely the alining and localizing functions of the longitudinally grooved or corrugated fly leaf binding.

VJhat is claimed is 1. In a loose leafbinder of the link-andpintle type, a fly leaf provided at its attaching edge with a longitudinally corrugated binding of durable material.

2. A fly leaf for loose leaf binders of the linkand-pintle type, having at its attaching edge a metallic binding strip provided with openings to receive leafcarrying links of the binder, and longitudinally corrugated to hold together the fly leaf and its binding, and to receive and form a bearingseat for a pintle housing of the binder.

3. In combination with a loose leaf binder comprising a back and cover boards and leafcarrying links bridging the back and carried by pintles passing through their ends, a fly leaf having a binding strip applied to and clampingits attaching edge, said strip being longitudinally corrugated to securely connect the fly leaf and its binding, and provided with openings to receive the links.

In testimony whereof I have signed my name to this specification.

HARRY O. STERLING. 

